Out-of-bounds Write Affecting grub2-s390x-emu package, versions <2.04-150200.9.68.1
Snyk CVSS
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Test your applications- Snyk ID SNYK-SLES152-GRUB2S390XEMU-3148205
- published 26 Nov 2022
- disclosed 25 Nov 2022
How to fix?
Upgrade SLES:15.2
grub2-s390x-emu
to version 2.04-150200.9.68.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream grub2-s390x-emu
package and not the grub2-s390x-emu
package as distributed by SLES:15.2
.
See How to fix?
for SLES:15.2
relevant fixed versions and status.
A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.